Finding the Third Proportional to 51,689,364 and 80,026,488

Step by Step Solution

1. Step 1: Write the proportion equation
   51,689,364 : 80,026,488 = 80,026,488 : x
2. Step 2: Convert to fraction form
   51,689,364/80,026,488 = 80,026,488/x
3. Step 3: Cross multiply
   51,689,364x = 80,026,488 × 80,026,488
4. Step 4: Simplify right side
   51,689,364x = 6,404,238,781,614,144
5. Step 5: Solve for x
   x = 6,404,238,781,614,144/51,689,364
6. Step 6: Final answer
   x = 123,898,579.63